Titmusbilder:Fliege intakt;

English translation: Titmus Fly test: fly intact

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In the Titmus test, devised by Wirt in 1971, the subject wears a polarizing spectacle to separate two superimposed polarized monocular images. The picture for the left eye is polarized at 450 and that for the right eye at 1350, and the viewers correspondingly orientated. The test comprises three subtest. ****The first is a large picture of a fly, in which parts of the monocular pictures are separated by some 7.5mm,**** which, held at a viewing distance of 30cm from the eyes, and assuming a PD of 60mm, represents a stereo disparity of about 1016'--which, compared to the average normal stereo parity of 20-50 seconds of arc, demonstrates only the presence of gross stereopsis. This is intended as a demonstration of the test to the patient, and, by its striking nature attracts the attention and interest of children.

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2 hrs confidence: peer agreement (net): +5

Titmus Fly test: fly intact

Explanation:The Titmus Test

In the Titmus test, devised by Wirt in 1971, the subject wears a polarizing spectacle to separate two superimposed polarized monocular images. The picture for the left eye is polarized at 450 and that for the right eye at 1350, and the viewers correspondingly orientated. The test comprises three subtest. ****The first is a large picture of a fly, in which parts of the monocular pictures are separated by some 7.5mm,**** which, held at a viewing distance of 30cm from the eyes, and assuming a PD of 60mm, represents a stereo disparity of about 1016'--which, compared to the average normal stereo parity of 20-50 seconds of arc, demonstrates only the presence of gross stereopsis. This is intended as a demonstration of the test to the patient, and, by its striking nature attracts the attention and interest of children.